Hi. I'm looking for a plugin that allows users to enter product details upon adding an item to their cart. To be specific I am building a site which sells personalised greeting cards. When a user chooses a product variant I want to be able to offer the user the ability to enter some free text, which will essentially be their name or their friend's name. I need the free text value to come through the shopping cart and then I enter this name into my design and produce the card. Is there a plugin that provides this functionality?